Dissolving-view apparatus.



H. KRIEGER.

DISSOLVING VIEW APPARATUS.

APPLICATION FILED 31111.30, 1911.

13901 Aug. 22, 19M.

2 SHEETS-SHEET 1.

l/l/l/E/VTOH ATTORNEYS WITNESSES H. KRIEGER.

DISSOLVING VIEW APPARATUS,

APPLICATION FILED JAN 30,1911. LQGL 'ESQ Patented Aug. 22, 191i.

2 SHEETSSHEET 2.

WITNESSES IAIVENTOR Jfuya we? momma DISSOLVI NG-VIEW APPARATU$.

Application filed January 30, 1911. Serial No. 605,448.

To all whom it may concern: v Be it known that I, Huoo KInnonR,v a. subjeet of the German Emperor, and a resident of the city of Newhork, borough of the 'Bronx, in the county and State of vNew York, have invented a new and Improved Dissolvingview Apparatus, of which the following is a'full, clear, and exact description; a v

The lIH'Gl'll'lOIl relateslto optics, and its object is to provide a new andimproved' dissolving view apparatus, arranged with a single source of light and one lampcasing thus simplifying the construction of the apparatus and requiring less adjustment and attention on thepart of the operator.

For the purpose mentioned, use is made of a lamp casing, in which is mounted a pair of condensing lenses, and a source of light in the casing opposite one of the said condensing lenses and aprism opposite the.

other condensing lens and receiving rays of light from thesaid source of light, so that the latter supplies the rays of light directly to one condensing lens and indirectly by way of the prism to the other condensing lens.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indirate corresponding parts, in all the views.

Figure 1 is a sectional plan View of the dissolving view apparatus, the projectinglens being shown in plan view; l ig. 2 is a perspective view of the lamp casing and the condensing lens mounted thereon; Fig. 3 is a side elevation of the housing for the prism and the condensing lens thereof; Fig. i is a perspective view of the prism; and Fig. 5 is a diagrammatic plan view showing the dissolving view apparatus appliedto the moving'picture machine.

The lamp casing A is mounted on a suitable support B and contains asourceoflight C, which may be in the form of a calcium light, electric arc light, or the like. In front of the source of lig'htC is arranged a condenser D, preferably havin two opp ositely disposed piano-convex lenses, shown in 1 ig. 1, and in'front of the condenser D is arranged a slide carrier E, for receiving a slide or picture F, and on the front of the slide carrier 13 is arranged a hood Gfint the 'forn'i of a frus'tum of a cone'fthe axis of I Specification of Letters Patent.

shaft J which by the worm d hallddt-lm caries.

- Patented An which-coincides with the axis of the GOlls' denser D. In front of thehood Gandhi axial alineinent thereof and the condenser D is arranged a projecting lt11S"Tl;'0fa. tl1Q usual construction for projecting theziobject onto a distant screen. I

One side of the lamp -asingc-A ,vided with a door A, and the oppo I v is providedwith an opening A T,- reg s 0 n with an openi g. 1' formed in admus' igfi containing a prism J, .in front. oflwln cli ns arrangt-vd a condenser D attache-Lido, the 1} front of the housing .I. The eonden is preferably provided with a single (lensing lens of plano-convex shape, i dicatedin Fig. 1. In. front ofth" M denser D is arranged a slide Carrie for receivinga slide or a picture "Ff, and on the slide carrier Eis arranged a. hood G. similar to the hood G, and in axial z N ment with the condenser D; lnofront of the hood G is arranged a .projeeting' lens I, similar to the 'proj ectingil-ens l the said pro'ecti-ng lenses Hand H, provided with clissolvii'ig shutters K 1i; op erated in unison with each other fronra handle K under the control of theop 5 I so that when one shutter K .is open d he other is simultaneously closed and vice versa. The projecting lenses H and H mounted on a suitable standard H ad u' ably secured to the support B by at H extending through a longitudin A formed on the support 13. The bottom of the prism J is provit ed. with a shaft Jjournaled in the bottom of I the housing T, and on the said shaft J? is secured aworni wheel J in mesh with a worm wheel J secured on the forward end of a shaft J journaled in suitablebearings arranged on the under-side of the housing I. The rear end of the shaft Jterminates in a handle J under the control of the op erator for imparting a rotary motion tothe worm wheel J turns the prism J so asto change the position of thesides thereof relative to the source of light Gland the condenser -D, respectively. Normally the forwardside of the prism J is at right angles to .the axis of the condenser D,'while the otherside is parallel to the axis of the con densers D and. D.

Itwill be seen that the rays of light from the source of light C pass directly to the source of light andone lamp casing A 1s I K onto the screen.

' is gradually brightened on opening the shut- D the projected imagecan be shifted on the D, so that the slide-carriers are in the indicated in Fig. 5. 'T 'e condenser D ,'now

insure proper registry -D'and D.

:view apparatus in connection with a moving picture machine N, as shown in Flg. 5,-:

condenser D and indirectly to the condensen'l D by way of the prism so that only one required for furnishing the proper amount of light to the-condensers D and D. When the several parts are in the position shown in 'Fig. 1, a slide F is in projecting position in front of the condenser D, and the subject" matter of this slide F is now projected by the projecting lens H and its open shutter When it is desired to dissolve the subject matter of the slide F with the subject matter of the slide F, then the operator takes hold of the handle K and gradually closes the shutter K while simultaneously opening the shutter K, at the same time the slide F is placed in position in front of the condenser D, so that the subject matter of this slide F is projected onto the screen by the projecting lens H ,and as the projected subject matter of the slide F is gradually dimmed by closing the shutter K, and the subject matter of the slide F ter K, it is evident that the two pictures are dissolved. By turnin the prism into an angular position relative to the condenser screen, so-as to properly-coincidcwit-h the imageprojected by the projecting lens'H to of. the projected 1mages. The slide ca'rriers E and E and thehoods G, G heldthereon are preferably adjustably supported from thecasing A and the housing I, and for this purpose supports L are attached to the lamp caslng A and the housing I (see'Fig. 2), and each support L slidingly receives a rod L term nating in a'bearing L engaged by a vert1- cal pin E depending frOm the bottom of the corresponding slidecarrier-E or E a (see Fig. 3). A set screw' L in the bearing L serves to fasten the pinE in place after the slide carrier E or E is adjusted up or 'down or toward or from the condensing lens D or proper positions relative to the condensers When it is desiredto use the dissolving then the lamp casing, A and the'parts attached thereto are mounted'to slide sidewise on a guidewa'y" O, tomove the condenser D in axial alinement with the moving picture machine, while the condenser D moves into axial position'with the rojecting lens H, as

supplies the necessary light r projecting moving pictures onto the screenwhile the. condenser Df supplies the light for 'pro'ecte ing a picture onto the screen by way 0 the projecting lens H, the other projecting lens not being used at-this time. The guideway 0 is provided withend stops to limit the sliding movement of the lamp'casing:

in either direction and thus insure accurate register of the parts in either position of the lamp casing.v

picture machine, such as are now in use, with the housing I, prism J, condenser D and slide carrier E, it is only necessary for the owner of such a machine to provide one side of the lamp casing A with the opening A, and then secure the-housing Iin posi- In supplying a lamp casingof a moving.

tion on this side of the lamp casing, so that i one of the two lamp casings and two sources of light therefor, as now generally used on ordinary moving picture machines, can be dispensed with, and only one lamp casing A and its source of light C used instead.

It is understood that by using one source of light for both condensers the expense in changing of the slides and the manipulating of the connectedshutters-K, K, and thus obtain better effects by causing one picture to gradually fade away, whilethe other appears visible out of the haze of the- 'disappearim one. 1

operator'can give hiskwhole attention to the p Having thus describedmy invention, I

claim as new and desire to secure by Letters Patent:

1. A dissolving view.

apparatus, provided with a1 lamp casing, condensers mounted on the said lamp casing, and having their axes arranged parallel one to theioth-er, a

source of light in the lamp casing opposite a one. of thcsaid condensers, and a prism interposed between the other condenser and the said source of light.

2. A dissolving view apparatus provided with a lamp casing, a. source of light therein, a pair of condcnsersmounted on the said main casing and having their axes arranged parallel oneto the other, one of the condensers being in front of theisaid source ol? li ht, and" a prisln'adjaccnt thc said source 0 .light and opposite the othercondenser;

with a lamp casing provided at one side with a prism housingfa prism in the said housing and mounted to, turn,.manuall y controlled means for-turnmg the said prism,

A- dissolving view'a paratus provided with a lampcasing 'provi ed a t'one side with a source of light in the said casing, and a pair of condensers having their axes arranged parallel one to the other, and of which condensers one is mounted on the said casing in front of the said source of lightand the other condenser is mounted on the said prism housing.

In combination with a moving picture machine, a guidcway transverse to the said moving picture machine and in the rear thereof the guideway being provided with end stops, a lamp casing mounted to slide on the said guideway and provided with two condensers having their axes parallel one to the other, and a pair of parallel projectiug lenses to one side of the moving picture machine, the said condensers in one position of the casing being in register with both projecting lenscsyand in another position of the casing one of the condensers being in register with the moving picture machine and the other condenser being in register with one of the said projecting lenses.

6. A dissolving View apparatus provided with a lamp casing, condensers mounted on the said lamp casing and having their axes parallel oneto the other, a source of light in the lamp casing opposite one of the said condensers, a prism interposed bet-ween the other condenser and the said source of light, and manually-controllcd means for turning thesaid prism to change the position of the sides of the prism relative to the source of light and the corresponding condensers.

7. In combination, with a moving picture machine, a guideway transverse to the said moving picture machine and in the rear thereof the guid-eway being provided with end stops, a lamp casing mounted to slide on the said guideway and provided with two condensers having their axes parallel one to the other, a single source of light in thesaid easing opposite one of the said condensers, a prism interposed between the said source of densers being in register With the moving picture machine and the other condenser being in register with one of the said projecting lenses.

' 8. Adissolvin'g View apparatus, comprising a lamp casing provided at one side with a prism housing, a source of light in the said lamp casing, a double lens condenser on the front of the said casing and in front of the said source of light, a single lens condenser in front of the said prism housing, the said condensers having parallel axes. and a prism in the said prism housing and interposed between the said source of light and the said single lens condenser. is

9. A dissolving View apparatus, comprising a lamp casing provided at one side with a prism housing, a source of light in the said lam-p easing, a double lens condenser on the front of the said casing and in front of the said source of light, a single lens condenser in front of the said prism housing, the said condensers having parallel axes, a prism in the -said prism housing and inter posed between the said source of-light and the said single lens condenser, transversely alined slide carriers in front of the said condensers, projecting lenses in front of the said slide carriers andin axial alinement With the said condensers and independent thereof, and shutters for the said projecting lenses.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HUGO KRIEGER. W itnesses i Tnno. Gr. Hosrnn,

PHILIP D. RoLLHAUs. 

